mirror of
https://github.com/panda3d/panda3d.git
synced 2025-10-03 02:15:43 -04:00
CMake: Move compiler flag detection to its own file
This commit is contained in:
Sam Edwards
parent
404cfa3fff
commit
8c4dfd7a70
107
CMakeLists.txt
107
CMakeLists.txt
@ -10,121 +10,16 @@ unset(_version)
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enable_testing()
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# Panda3D is now a C++11 project. Newer versions of CMake support this out of
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# the box; for older versions we take a shot in the dark:
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if(CMAKE_VERSION VERSION_LESS "3.1")
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include(CheckCXXCompilerFlag)
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check_cxx_compiler_flag("-std=gnu++11" COMPILER_SUPPORTS_CXX11)
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if(COMPILER_SUPPORTS_CXX11)
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set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=gnu++11")
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else()
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set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=gnu++0x")
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endif()
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else()
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set(CMAKE_CXX_STANDARD 11)
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endif()
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# Add generic modules to cmake module path,
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# and add Panda3D specific modules to cmake module path
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set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_SOURCE_DIR}/cmake/modules/")
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set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_SOURCE_DIR}/cmake/macros/")
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# Set certain CMake flags we expect
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set(CMAKE_INCLUDE_CURRENT_DIR_IN_INTERFACE ON)
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set(CMAKE_INCLUDE_CURRENT_DIR ON)
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# Set up the output directory structure, mimicking that of makepanda
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set(CMAKE_BINARY_DIR "${CMAKE_BINARY_DIR}/cmake")
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set(CMAKE_RUNTIME_OUTPUT_DIRECTORY "${PROJECT_BINARY_DIR}/bin")
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set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY "${PROJECT_BINARY_DIR}/lib")
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set(CMAKE_LIBRARY_OUTPUT_DIRECTORY "${PROJECT_BINARY_DIR}/lib")
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set(MODULE_DESTINATION "lib")
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# Runtime code assumes that dynamic modules have a "lib" prefix; Windows
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# assumes that debug libraries have a _d suffix.
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set(CMAKE_SHARED_MODULE_PREFIX "lib")
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if(WIN32)
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set(CMAKE_DEBUG_POSTFIX "_d")
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# Windows uses libfoo.lib for static libraries and foo.lib/dll for dynamic.
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set(CMAKE_STATIC_LIBRARY_PREFIX "lib")
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# On Windows, modules (DLLs) are located in bin; lib is just for .lib files
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set(CMAKE_LIBRARY_OUTPUT_DIRECTORY "${PROJECT_BINARY_DIR}/bin")
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if(BUILD_SHARED_LIBS)
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set(MODULE_DESTINATION "bin")
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endif()
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endif()
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# Set warning levels
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if(MSVC)
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set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /W3")
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set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /W3")
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else()
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set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall")
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set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall")
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endif()
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if(NOT "x${CMAKE_CXX_COMPILER_ID}" STREQUAL "xMSVC")
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set(disable_flags "-Wno-unused-function -Wno-unused-parameter")
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set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${disable_flags}")
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set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${disable_flags} -Wno-reorder")
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set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -Wno-unused-variable")
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set(CMAKE_CXX_FLAGS_RELWITHDEBINFO "${CMAKE_CXX_FLAGS_RELWITHDEBINFO} -Wno-unused-variable")
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set(CMAKE_CXX_FLAGS_MINSIZEREL "${CMAKE_CXX_FLAGS_MINSIZEREL} -Wno-unused-variable")
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if(MSVC)
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# Clang behaving as MSVC
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set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wno-unused-command-line-argument")
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set(CMAKE_CXX_FLAGS
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"${CMAKE_CXX_FLAGS} -Wno-microsoft-template -Wno-unused-command-line-argument")
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endif()
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endif()
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if(WIN32)
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add_definitions(-D_CRT_SECURE_NO_WARNINGS)
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endif()
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# CMake will often pass -rdynamic when linking executables as a convenience for
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# projects that might forget when to use ENABLE_EXPORTS. This is preposterous,
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# since it prevents the linker from removing symbols unneeded by the executable
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# and stops us from identifying cases where ENABLE_EXPORTS is needed.
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set(CMAKE_SHARED_LIBRARY_LINK_C_FLAGS "")
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set(CMAKE_SHARED_LIBRARY_LINK_CXX_FLAGS "")
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# As long as we're figuring out compiler flags, figure out the flags for
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# turning C++ exception support on and off
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include(CheckCXXCompilerFlag)
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if(MSVC)
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set(cxx_exceptions_on "/EHsc")
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set(cxx_exceptions_off "/D_HAS_EXCEPTIONS=0")
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else()
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check_cxx_compiler_flag("-fno-exceptions" COMPILER_SUPPORTS_FEXCEPTIONS)
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if(COMPILER_SUPPORTS_FEXCEPTIONS)
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set(cxx_exceptions_on "-fexceptions")
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set(cxx_exceptions_off "-fno-exceptions")
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else()
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set(cxx_exceptions_on)
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set(cxx_exceptions_off)
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endif()
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endif()
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set(cxx_exceptions_property "$<BOOL:$<TARGET_PROPERTY:CXX_EXCEPTIONS>>")
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add_compile_options(
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"$<${cxx_exceptions_property}:${cxx_exceptions_on}>"
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"$<$<NOT:${cxx_exceptions_property}>:${cxx_exceptions_off}>")
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# We should use -fvisibility=hidden everywhere, as it makes sure we think
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# about what symbols really should be exposed externally. For more info, see:
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# https://gcc.gnu.org/wiki/Visibility
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if(NOT MSVC)
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check_cxx_compiler_flag("-fvisibility=hidden" COMPILER_SUPPORTS_FVISIBILITY_HIDDEN)
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if(COMPILER_SUPPORTS_FVISIBILITY_HIDDEN)
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add_compile_options("-fvisibility=hidden")
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endif()
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endif()
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# Include global modules needed for configure scripts
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include(PackageConfig) # Defines package_option
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# Configure Panda3D
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include(dtool/CompilerFlags.cmake)
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include(dtool/PandaVersion.cmake)
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include(dtool/Package.cmake)
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include(dtool/Config.cmake)
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113
dtool/CompilerFlags.cmake
Normal file
113
dtool/CompilerFlags.cmake
Normal file
@ -0,0 +1,113 @@
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#
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# CompilerFlags.cmake
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#
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# This file sets up various compiler flags (warning levels, turning off options
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# we don't need, etc.) It must be included directly from the root
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# CMakeLists.txt, due to its use of set(...)
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#
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include(CheckCXXCompilerFlag)
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# Panda3D is now a C++11 project. Newer versions of CMake support this out of
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# the box; for older versions we take a shot in the dark:
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if(CMAKE_VERSION VERSION_LESS "3.1")
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check_cxx_compiler_flag("-std=gnu++11" COMPILER_SUPPORTS_CXX11)
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if(COMPILER_SUPPORTS_CXX11)
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set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=gnu++11")
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else()
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set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=gnu++0x")
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endif()
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else()
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set(CMAKE_CXX_STANDARD 11)
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endif()
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# Set certain CMake flags we expect
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set(CMAKE_INCLUDE_CURRENT_DIR_IN_INTERFACE ON)
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set(CMAKE_INCLUDE_CURRENT_DIR ON)
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# Set up the output directory structure, mimicking that of makepanda
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set(CMAKE_BINARY_DIR "${CMAKE_BINARY_DIR}/cmake")
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set(CMAKE_RUNTIME_OUTPUT_DIRECTORY "${PROJECT_BINARY_DIR}/bin")
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set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY "${PROJECT_BINARY_DIR}/lib")
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set(CMAKE_LIBRARY_OUTPUT_DIRECTORY "${PROJECT_BINARY_DIR}/lib")
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set(MODULE_DESTINATION "lib")
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# Runtime code assumes that dynamic modules have a "lib" prefix; Windows
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# assumes that debug libraries have a _d suffix.
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set(CMAKE_SHARED_MODULE_PREFIX "lib")
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if(WIN32)
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set(CMAKE_DEBUG_POSTFIX "_d")
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# Windows uses libfoo.lib for static libraries and foo.lib/dll for dynamic.
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set(CMAKE_STATIC_LIBRARY_PREFIX "lib")
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# On Windows, modules (DLLs) are located in bin; lib is just for .lib files
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set(CMAKE_LIBRARY_OUTPUT_DIRECTORY "${PROJECT_BINARY_DIR}/bin")
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if(BUILD_SHARED_LIBS)
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set(MODULE_DESTINATION "bin")
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endif()
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endif()
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# Set warning levels
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if(MSVC)
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set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /W3")
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set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /W3")
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else()
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set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall")
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set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall")
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endif()
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if(NOT "x${CMAKE_CXX_COMPILER_ID}" STREQUAL "xMSVC")
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set(disable_flags "-Wno-unused-function -Wno-unused-parameter")
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set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${disable_flags}")
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set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${disable_flags} -Wno-reorder")
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set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -Wno-unused-variable")
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set(CMAKE_CXX_FLAGS_RELWITHDEBINFO "${CMAKE_CXX_FLAGS_RELWITHDEBINFO} -Wno-unused-variable")
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set(CMAKE_CXX_FLAGS_MINSIZEREL "${CMAKE_CXX_FLAGS_MINSIZEREL} -Wno-unused-variable")
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if(MSVC)
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# Clang behaving as MSVC
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set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wno-unused-command-line-argument")
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set(CMAKE_CXX_FLAGS
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"${CMAKE_CXX_FLAGS} -Wno-microsoft-template -Wno-unused-command-line-argument")
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endif()
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endif()
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if(WIN32)
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add_definitions(-D_CRT_SECURE_NO_WARNINGS)
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endif()
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# CMake will often pass -rdynamic when linking executables as a convenience for
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# projects that might forget when to use ENABLE_EXPORTS. This is preposterous,
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# since it prevents the linker from removing symbols unneeded by the executable
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# and stops us from identifying cases where ENABLE_EXPORTS is needed.
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set(CMAKE_SHARED_LIBRARY_LINK_C_FLAGS "")
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set(CMAKE_SHARED_LIBRARY_LINK_CXX_FLAGS "")
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# As long as we're figuring out compiler flags, figure out the flags for
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# turning C++ exception support on and off
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if(MSVC)
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set(cxx_exceptions_on "/EHsc")
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set(cxx_exceptions_off "/D_HAS_EXCEPTIONS=0")
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else()
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check_cxx_compiler_flag("-fno-exceptions" COMPILER_SUPPORTS_FEXCEPTIONS)
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if(COMPILER_SUPPORTS_FEXCEPTIONS)
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set(cxx_exceptions_on "-fexceptions")
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set(cxx_exceptions_off "-fno-exceptions")
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else()
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set(cxx_exceptions_on)
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set(cxx_exceptions_off)
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endif()
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endif()
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set(cxx_exceptions_property "$<BOOL:$<TARGET_PROPERTY:CXX_EXCEPTIONS>>")
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add_compile_options(
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"$<${cxx_exceptions_property}:${cxx_exceptions_on}>"
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"$<$<NOT:${cxx_exceptions_property}>:${cxx_exceptions_off}>")
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# We should use -fvisibility=hidden everywhere, as it makes sure we think
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# about what symbols really should be exposed externally. For more info, see:
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# https://gcc.gnu.org/wiki/Visibility
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if(NOT MSVC)
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check_cxx_compiler_flag("-fvisibility=hidden" COMPILER_SUPPORTS_FVISIBILITY_HIDDEN)
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if(COMPILER_SUPPORTS_FVISIBILITY_HIDDEN)
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add_compile_options("-fvisibility=hidden")
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endif()
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endif()
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